package com.mrzhou.common.util;

import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.util.StringJoiner;

/**
 * @author qiang.zhou
 */
public class VirtualUserUtil {

    public static void main(String[] args) {
        long startTime = System.currentTimeMillis();
        int i = 0;
        int max = 10000;
        while (i < max) {
            i++;
            System.out.print(randDate("1970-03-01 00:00:00", "2010-03-01 23:59:59").format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")) + "   " + (i%10 == 0 ? "\n" : ""));
        }
        System.out.println("\n花费时间：" + (System.currentTimeMillis() - startTime));
    }

    /**
     *  生成随机的名称
     * @param length  名的长度
     * @return [1, length]长度的名
     */
    public static String randName(int length) {
        StringJoiner joiner = new StringJoiner("");
        joiner.add(randSurname());
        joiner.add(randGivenName(random(1, length+ 1)));
        return joiner.toString();
    }

    public static String randSurname() {
        return SURNAME[random(0, SURNAME.length)];
    }

    public static String randGivenName(int length) {
        StringJoiner joiner = new StringJoiner("");
        while (length > 0) {
            length--;
            joiner.add(String.valueOf(GIVEN_NAME.charAt(random(0, GIVEN_INDEX))));
        }
        return joiner.toString();
    }

    /**
     *  生成指定范围的随机数
     * @param min 最小的随机数
     * @param max 最大的随机数, 永远不会等于它
     * @return [min, max)
     */
    public static int random(int min, int max) {
        return (int) (Math.random() * (max - min) + min);
    }

    public static long random(long min, long max) {
        return (long) (Math.random() * (max - min) + min);
    }

    public static LocalDateTime randDate(String startTimeStr, String endTimeStr) {
        LocalDateTime startTime = LocalDateTime.parse(startTimeStr, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        LocalDateTime endTime = LocalDateTime.parse(endTimeStr, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        long startMilli = startTime.toInstant(ZoneOffset.of("+8")).toEpochMilli();
        long endMilli = endTime.toInstant(ZoneOffset.of("+8")).toEpochMilli();
        long newMilli = random(startMilli, endMilli);
        return LocalDateTime.ofInstant(Instant.ofEpochMilli(newMilli), ZoneOffset.ofHours(8));
    }

    public static LocalDate timeToLocalDate(LocalDateTime localDateTime) {
        return LocalDate.of(localDateTime.getYear(), localDateTime.getMonth(), localDateTime.getDayOfMonth());
    }

    private static final String GIVEN_NAME = "明国华建文平志伟东海强晓生光林小民永杰军金健一忠洪江福祥中正离振勇耀春大宁晴亮宇兴宝少剑云学莉仁涛瑞飞鹏安亚泽世汉达卫利胜敏群波成荣新峰刚家龙德庆斌辉良玉俊立浩天宏子松克清长嘉红山贤阳乐锋智青跃元武广思雄锦威启昌铭维义宗英凯鸿森超坚旭政传康继翔栋仲权奇礼楠炜友年震鑫雷兵万星骏伦绍麟雨行才希彦兆贵源有景升惠臣慧开章润高佳虎根远力进泉茂毅富博霖顺信凡豪树和恩向道川彬柏磊敬书鸣芳培全炳基冠晖京欣廷哲保秋君劲轩帆若连勋祖锡吉崇钧田石奕发洲彪钢运伯满庭申湘皓承梓雪孟其潮冰怀鲁裕翰征谦航士尧标洁城寿枫革纯风化逸腾岳银鹤琳显焕来心凤睿勤延凌昊西羽百捷定琦圣佩麒虹如靖日咏会久昕黎桂玮燕可越彤雁孝宪萌颖艺夏桐月瑜沛诚夫声冬奎扬双坤镇楚水铁喜之迪泰方同滨邦先聪朝善非恒晋汝丹为晨乃秀岩辰洋然厚灿卓杨钰兰怡灵淇美琪亦晶舒菁真涵爽雅爱依静棋宜男蔚芝菲露娜珊雯淑曼萍珠诗璇琴素梅玲蕾艳紫珍丽仪梦倩伊茜妍碧芬儿岚婷菊妮媛莲娟";

    private static final int GIVEN_INDEX = GIVEN_NAME.length();

     private static final String[] SURNAME = {"赵","钱","孙","李","周","吴","郑","王","冯","陈","褚","卫","蒋","沈","韩","杨","朱","秦","尤","许",
             "何","吕","施","张","孔","曹","严","华","金","魏","陶","姜","戚","谢","邹","喻","柏","水","窦","章","云","苏","潘","葛","奚","范","彭","郎",
             "鲁","韦","昌","马","苗","凤","花","方","俞","任","袁","柳","酆","鲍","史","唐","费","廉","岑","薛","雷","贺","倪","汤","滕","殷",
             "罗","毕","郝","邬","安","常","乐","于","时","傅","皮","卞","齐","康","伍","余","元","卜","顾","孟","平","黄","和","刻","可",
             "穆","萧","尹","姚","邵","湛","汪","祁","毛","禹","狄","米","贝","明","臧","计","伏","成","戴","谈","宋","茅","庞","熊","纪","舒",
             "屈","项","祝","董","梁","杜","阮","蓝","闵","席","季","麻","强","贾","路","娄","危","江","童","颜","郭","梅","盛","林","刁","钟",
             "徐","邱","骆","高","夏","蔡","田","樊","胡","凌","霍","虞","万","支","柯","昝","管","卢","莫","经","房","裘","缪","干","解","应",
             "宗","丁","宣","贲","邓","郁","单","杭","洪","包","诸","左","石","崔","吉","钮","龚","程","嵇","邢","滑","裴","陆","荣","翁","荀",
             "羊","于","惠","甄","曲","家","封","芮","羿","储","靳","汲","邴","糜","松","井","段","富","巫","乌","焦","巴","弓","牧","隗","山",
             "谷","车","侯","宓","蓬","全","郗","班","仰","秋","仲","伊","宫","宁","仇","栾","暴","甘","钭","厉","戎","祖","武","符","刘","景",
             "詹","束","龙","叶","幸","司","韶","郜","黎","蓟","溥","印","宿","白","怀","蒲","邰","从","鄂","索","咸","籍","赖","卓","蔺","屠",
             "蒙","池","乔","阴","郁","胥","能","苍","双","闻","莘","党","翟","谭","贡","劳","逄","姬","申","扶","堵","冉","宰","郦","雍","却",
             "璩","桑","桂","濮","牛","寿","通","边","扈","燕","冀","浦","尚","农","温","别","庄","晏","柴","瞿","阎","充","慕","连","茹","习",
             "宦","艾","鱼","容","向","古","易","慎","戈","廖","庾","终","暨","居","衡","步","都","耿","满","弘","匡","国","文","寇","广","禄",
             "阙","东","欧","殳","沃","利","蔚","越","夔","隆","师","巩","厍","聂","晁","勾","敖","融","冷","訾","辛","阚","那","简","饶","空",
             "曾","毋","沙","乜","养","鞠","须","丰","巢","关","蒯","相","查","后","荆","红","游","郏","竺","权","逯","盖","益","桓","公","仉",
             "督","岳","帅","缑","亢","况","郈","有","琴","归","海","晋","楚","闫","法","汝","鄢","涂","钦","商","牟","佘","佴","伯","赏","墨",
             "哈","谯","篁","年","爱","阳","佟","言","福","南","火","铁","迟","漆","官","冼","真","展","繁","檀","祭","密","敬","揭","舜","楼",
             "疏","冒","浑","挚","胶","随","高","皋","原","种","练","弥","仓","眭","蹇","覃","阿","门","恽","来","綦","召","仪","风","介","巨",
             "木","京","狐","郇","虎","枚","抗","达","杞","苌","折","麦","庆","过","竹","端","鲜","皇","亓","老","是","秘","畅","邝","还","宾",
             "闾","辜","纵","侴","万俟","司马","上官","欧阳","夏侯","诸葛","闻人","东方","赫连","皇甫","羊舌","尉迟","公羊","澹台","公冶","宗正",
             "濮阳","淳于","单于","太叔","申屠","公孙","仲孙","轩辕","令狐","钟离","宇文","长孙","慕容","鲜于","闾丘","司徒","司空","兀官","司寇",
             "南门","呼延","子车","颛孙","端木","巫马","公西","漆雕","车正","壤驷","公良","拓跋","夹谷","宰父","谷梁","段干","百里","东郭","微生",
             "梁丘","左丘","东门","西门","南宫","第五","公仪","公乘","太史","仲长","叔孙","屈突","尔朱","东乡","相里","胡母","司城","张廖","雍门",
             "毋丘","贺兰","綦毋","屋庐","独孤","南郭","北宫","王孙"};

}
